Evaluation of Hand-Held Instruments for Representative Determination of Glucose in Potatoes
作者： Trygve Helgerud , Svein H. Knutsen , Nils K. Afseth , Kim F. Stene , Elling O. Rukke
DOI: 10.1007/S11540-015-9310-8
关键词: Blood glucose monitors 、 Hand held 、 Correlation coefficient 、 Chromatography 、 Mathematics 、 Reference analysis 、 Biochemistry
摘要: In this study, the use of two modern portable blood glucose monitors (PBGMs) and a fruit juice-specific system (RQFlex) from Merck was evaluated for determination concentrations in potato juice, as representation whole potato. The PBGMs (LifeScan OneTouch Ultra Easy Bayer Contour) both provided squared correlation coefficients (R2, p < 0.001) 0.92, when compared to reference analysis based on Anion Exchange Chromatography (HPAED-PAD).The LifeScan monitor gave an error estimation 0.54 mg ml−1 but overestimated concentration by 20%. 1.12 underestimated 40%. RQFlex outperformed (R2 = 0.96, 0.001), 0.24 mL−1) PBGMS, is slightly more labour intensive than PBGMs. A coefficient 0.91, 0.001, found comparing juice content lyophilized potato, indicating that sampling may be introducing uncertainties measurements.
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